# std::regex_error::regex_error

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< cpp‎ | regex‎ | regex error

Defined in header `<regex>` |  |
regex_error( std::regex_constants::error_type ecode ); | (1) | (since C++11)
regex_error( const regex_error& other ); | (2) | (since C++11)

1) Constructs a `regex_error` with a given ecode of type std::regex_constants::error_type.
2) Copy constructor. Initializes the contents with those of other. If *this and other both have dynamic type `std::regex_error` then std::strcmp(what(), other.what()) == 0.

### Parameters

ecode | - | error code indicating the error raised in regular expression parsing
other | - | another `regex_error` object to copy

### See also

error_type (C++11) | describes different types of matching errors (typedef)

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